The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 10, 1995
Filed:
Oct. 13, 1992
John A Edmond, Apex, NC (US);
Douglas A Asbury, Chapel Hill, NC (US);
Calvin H Carter, Jr, Cary, NC (US);
Douglas G Waltz, Durham, NC (US);
Cree Research, Inc., Durham, NC (US);
Abstract
A method of testing a semiconductor device, having the steps of pulsing the semiconductor device with a predetermined level of current for a duration of time so as to cause inadequate parts to degrade and to cause adequate parts to stabilize, and measuring predetermined electrical or optical performance characteristics for the semiconductor device after the current pulse. A system for testing a semiconductor device on a wafer is also provided having a contact probe for applying current pulses to the semiconductor device on the wafer, measuring means electrically connected to the probe for measuring predetermined electrical or optical performance characteristics of the semiconductor device on the wafer, and optical detection means electrically connected to the measuring means for detecting radiation emitted from the semiconductor device on the wafer.